Logs, brush, demolition debris and loose mixed material require different jaw geometry and retention. Describe the typical load, its shape and where it must be placed. A large opening is useful only if the tool can hold the material securely through the intended movement and the carrier is approved for that application.
Check the complete moving envelope
Document the grapple and rotator, if fitted, as a combined attachment with their actual mass and connections. Verify the carrier’s applicable lifting or handling limits at the load position. Check hose protection, visibility and clearance through the full permitted movement; added rotation also requires appropriate controls and hydraulic routing.
Inspect structure and closing action
Look for cracked welds, bent tines, worn hinge pins and damaged cylinder rods. Inspect hose abrasion and fittings. In a controlled demonstration, observe smooth opening and closing and whether the jaws meet as designed. Ask why any plates or reinforcement were added and obtain the repair history before treating them as an improvement.
Build the attachment purchase brief
Decision
Evidence to obtain
How to use it
Material shape
Typical load and jaw opening needed
Select the appropriate retention geometry
Carrier setup
Mount, tool weight and hydraulic requirements
Verify the complete carrying arrangement
Used condition
Pins, cylinders, jaw structure and hose assessment
Compare the cost of a serviceable tool
Compatibility factors to verify
Information required
Material and typical load shape
Tool and rotator mass and load center
Mount and hydraulic/control requirements
Jaw, tine, pin and cylinder condition
Carrier approval for the intended handling task
Fitment and operating checks
Carrier machine class and serial-specific configuration
Attachment weight, centre of gravity and machine stability
Pin geometry, ear width or exact coupler interface
Hydraulic flow, pressure, return line and case drain where applicable
Auxiliary electrical controls and manufacturer restrictions
Final fitment, stability, hydraulic performance and safe operating limits must be confirmed through applicable manufacturer guidance, a dealer or a qualified attachment supplier.
Related verified model research
A short class-level research path—not an exact-fitment list.
Select a researched model and attachment class to expose what is known and what still needs verification.
No selection in this checker is an attachment approval. Unknown fitment remains unknown.
Technical research & specification evidence
Clamshell and handling buckets: shell, suspension and complete-tool mass
Original identification research and qualified issuer references. Actual installed assemblies, serial-specific fitment and safety approval remain unverified.
A clamshell or handling bucket is a configured assembly with moving shells and a defined mounting or suspension. Its capacity, opening geometry and mass do not independently establish a permissible lifted load. Research should retain the exact complete tool and the boundaries of its hydraulic, rotating and mounting equipment.
Clamshell and grab bucketOne partly open two-shell grab embodiment with upper frame and two visible cylinders. Rotator,hoses and suspension omitted. Shell travel,cylinder layout,closing force,capacity,load limits,safety and exact fit unverified. HeavyEQ family research illustration; installed fitment is not established.
Component family researchInstalled fitment not established
Each reference retains its own subject and conditions. A series, model or family name does not establish an installed component, safe setting or interchangeable replacement.
Documented reference
Specifications with configuration evidence
Expand each row before comparing values. Examples, standards metadata and architecture observations retain their original scope.
Liebherr clamshell bucket families
Clamshell and handling buckets: shell, suspension and complete-tool mass: Liebherr clamshell bucket families
Parameter
Reference value
Evidence
Liebherr clamshell mass-reference distinction
Weight without suspension is explicitly distinguishedFamily reference; no model or variant selected
Scope & source
Manufacturer-defined mass boundary
Reference: Family reference; no model or variant selected
Issuer-published attribute; not an independent measurement · WeightWithoutSuspension field · No total operating mass or lifting capacity inferred
Public family reference separates shell types,mountings,capacity and WeightWithoutSuspension. No WLL or machine installation accepted.
Web page checked 2026-10-15; no numbered document edition observed
No machine-specific, installed or serial-verified fitment established.
Liebherr clamshell bucket families ↗ · Public family reference separates shell types,mountings,capacity and WeightWithoutSuspension. No WLL or machine installation accepted.
Source checked 2026-10-15. PUBLIC_REFERENCE_ONLY. Original analysis and a few selected scoped facts; no licence for bulk tables, drawings, diagrams, logos, photographs, technical manuals or inventory. Programme editorial/linking acceptance remains required.
Open identification fields (2)
These values have not been established. Unknown, unavailable, unverified and not applicable remain distinct evidence states; none means zero.
Clamshell and handling buckets: shell, suspension and complete-tool mass: unresolved identification requirements
Parameter
Evidence state
Required scope
Actual shell/mount/suspension identities
Unverified
Complete issued configuration required
Capacity,mass and lifting-application basis
Unverified
No WLL or payload from family dimensions
Identify the complete assembly and working form
Record the maker, full model, shell form and whether the requested unit includes suspension, rotator or other equipment. A loose-material shell, digging shell and another handling configuration can serve different purposes. A tool called grab is not automatically the same assembly as an excavator bucket or grapple. Preserve the actual issuer terminology and supplied scope before comparing general material-handling descriptions or machine class ranges.
A manufacturer reference makes mass scope visible
Liebherr’s public clamshell-family reference separately names shell types, mounting alternatives, capacity and weight without suspension. This is a useful configuration distinction, not a copied numerical product table. It shows why mass needs an inclusion basis. The present guide selects no lifting capacity, hydraulic pressure or carrier assignment from the family page. A reference describing several products does not establish that their suspension, rotator or shells are interchangeable.
Capacity and opening dimensions answer different questions
Retain the manufacturer’s defined capacity and measuring basis separately from shell width, opening width and closed-tool envelope. A large opening does not establish usable volume or payload. Likewise, a capacity label does not identify the material duty or allowable lifted load. Keep original units and any qualifier with later accepted values. Unknown geometry should remain null rather than being estimated from photographs or inferred from the carrier’s advertised lifting chart.
Suspension and rotation require their own identities
Direct mounting, a coupler and a suspended arrangement can change the complete assembly boundary. A rotator or suspension may add mass and alter geometry without changing the shell-family name. Preserve upper mounting, rotating unit and lower tool as separate records where documented. Do not merge a catalogue category into a universal interface. The exact combination needs manufacturer authority and actual machine evidence, particularly where prior changes or mixed components are involved.
Hydraulics and lifting approval stay separately controlled
Opening and closing functions and rotation can have distinct hydraulic requirements. Their internal components retain 02A ownership and controls remain with 02C. A maximum product pressure is not an instruction to configure a carrier circuit, and a tool mass or capacity does not supply a WLL. The complete machine and attachment approval must establish any lifting application. No hose connection, pressure setting, locking check, proof load or safety override is supplied here.
Prepare the exact enquiry
Provide the carrier and region, tool markings, shell form, mounting and supplied suspension or rotator scope. Keep serial/PIN and private configuration history in the technical review packet. Ask a qualified source to resolve the complete assembly, mass basis and applicable machine relationship. This original reference remains useful before an exact installation is established, but does not certify used-tool condition, repair quality or safe load. No supplier inventory, price or generic cross-machine fitment is created.
Unresolved technical and source questions (2)
No installed handling bucket or approved lifting application established.
Public family reference separates shell types,mountings,capacity and WeightWithoutSuspension. No WLL or machine installation accepted.
PUBLIC_REFERENCE_ONLY. Original analysis and a few selected scoped facts; no licence for bulk tables, drawings, diagrams, logos, photographs, technical manuals or inventory. Programme editorial/linking acceptance remains required.
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.
Sorting grapples and excavator clamps: jaw architecture before carrier class
Original identification research and qualified issuer references. Actual installed assemblies, serial-specific fitment and safety approval remain unverified.
A grapple inquiry should identify what closes around the material, how the jaws move and where rotation occurs. Sorting, bypassing-finger and handling designs are different assemblies. Carrier size is only one research filter; it cannot replace the grapple identity, mounting arrangement or function-specific evidence.
Sorting grapple and clampOne partly open non-rotating sorting-grapple embodiment with two perforated jaws and one visible cylinder. Opening count,kinematics,closing force,capacity,load limits,safety and exact mounting fit unverified. HeavyEQ family research illustration; installed fitment is not established.
Component family researchInstalled fitment not established
Each reference retains its own subject and conditions. A series, model or family name does not establish an installed component, safe setting or interchangeable replacement.
Documented reference
Specifications with configuration evidence
Expand each row before comparing values. Examples, standards metadata and architecture observations retain their original scope.
Steelwrist SGX sorting grapples
Sorting grapples and excavator clamps: jaw architecture before carrier class: Steelwrist SGX sorting grapples
Parameter
Reference value
Evidence
SGX jaw closure
Tip-to-tipSteelwrist SGX sorting-grapple family
Scope & source
Manufacturer-described closure architecture, not a holding-force or load claim
Reference: Steelwrist SGX sorting-grapple family
Current first-party manufacturer product reference · Descriptive classification; no dimensional datum · Manufacturer reference only; no machine/PIN, installed condition, certification or operating approval established
Compact and robust grapple with enhanced grip design
Web reference checked 2026-10-15; numbered manufacturer revision not stated
No machine-specific, installed or serial-verified fitment established.
Current first-party manufacturer product reference · Descriptive classification; no dimensional datum · Manufacturer reference only; no machine/PIN, installed condition, certification or operating approval established
Compact and robust grapple with enhanced grip design
Web reference checked 2026-10-15; numbered manufacturer revision not stated
No machine-specific, installed or serial-verified fitment established.
Source checked 2026-10-15. PUBLIC_REFERENCE_ONLY; no catalogue, manual, media or table reuse licence supplied
Open identification fields (3)
These values have not been established. Unknown, unavailable, unverified and not applicable remain distinct evidence states; none means zero.
Sorting grapples and excavator clamps: jaw architecture before carrier class: unresolved identification requirements
Parameter
Evidence state
Required scope
Integral rotator identity
Unverified
Whether rotation belongs to the grapple or an intermediate assembly
Jaw opening datum
UnverifiedRequested unit: mm
Exact contact-point and position definition for source measurement
Case-drain requirement
Unverified
Exact hydraulic arrangement; not inferred from rotating function
Describe the jaw arrangement precisely
Record whether the jaws meet tip-to-tip, pass alongside one another, use separate fingers or close against a fixed structure. Describe synchronized or independent motion only when the exact source supports it. The useful datum for opening is the named contact points and assembly position, not an unexplained width. Keep closed envelope, jaw opening and gripping width separate. These distinctions help explain why two tools called sorting clamps can require different wear parts and application evidence.
A scoped manufacturer family example
Steelwrist describes its SGX sorting-grapple grip as tip-to-tip and identifies shock-relief and load-holding valves in the hydraulic design. Those observations distinguish a family architecture, not a guarantee of holding force, permitted load or condition. The complete tool and hydraulic functions still need their own exact versions. No valve setting, failure behaviour or installation on the Cat 315 pilot is inferred from this source.
Identify every rotation and mounting object
Distinguish an integral rotator from rotation supplied by a tiltrotator or another carrier attachment. Record the upper hanger, intermediate assembly and lower tool body separately. A photograph of a rotating grapple may not show which component provides the function. Preserve optional or retrofit equipment and its source date. If a service request concerns the jaw pivot or replaceable edge, do not silently change it into a request for the complete grapple or hydraulic rotator.
Map the mechanical wear components
For identification, request the jaw-edge configuration, replaceable plate or tip system, pivot arrangement, pins and included retention parts. Record side and position from a named viewing orientation. Document visible mismatched jaws, uneven closure, altered mounting plates and previous structural work as review questions. These observations do not establish allowable wear or a repair method. A used-assembly record should preserve the scope of any professional inspection and distinguish it from a seller's general statement that the grapple is rebuilt.
Hydraulic requirements stay function-specific
Closing, rotation and any other powered function need separate source-backed requirements. In particular, a case-drain requirement cannot be inferred merely because a tool rotates or because the carrier has an auxiliary circuit. Keep flow, pressure, return and drain fields unknown until the exact tool arrangement is established. Hydraulic internals remain with the hydraulic research owner. A generic machine brochure cannot resolve the hydraulic configuration of a grapple supplied by another issuer.
Load claims need their own evidence
Gripping force, jaw-tip force, suspended-load capacity and carrier lifting capacity are different quantities. Do not convert one into another or infer a lifting approval from the ability to close around material. A complete inquiry identifies material-handling duty, tool mass and centre-of-gravity basis, actual mounting chain, legitimate load limitations and machine configuration. The public research can explain these distinctions without presenting an unverified load rating, rigging method or procedure for testing an uncertain tool.
Unresolved technical and source questions (1)
No grapple installed on315 verified, no case-drain requirement, load approval or jaw replacement identity established.
Compact and robust grapple with enhanced grip design: tip-to-tip closure and manufacturer-described shock-relief/load-holding valves; no capacities or service settings retained
PUBLIC_REFERENCE_ONLY; no catalogue, manual, media or table reuse licence supplied
Original HeavyEQ analysis and selected source facts. No catalogue reproduction licence, manufacturer endorsement or machine-specific compatibility is implied.
